/*
 * Copyright (c) JForum Team
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * This file creation date: Apr 5, 2003 / 11:43:46 PM
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum.dao.generic;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import net.jforum.JForumExecutionContext;
import net.jforum.dao.DataAccessDriver;
import net.jforum.dao.UserDAO;
import net.jforum.entities.Group;
import net.jforum.entities.KarmaStatus;
import net.jforum.entities.User;
import net.jforum.exceptions.DatabaseException;
import net.jforum.exceptions.ForumException;
import net.jforum.sso.LoginAuthenticator;
import net.jforum.util.DbUtils;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;

/**
 * @author Rafael Steil
 * @version $Id: GenericUserDAO.java,v 1.30 2008/06/07 05:29:40 andowson Exp $
 */
public class GenericUserDAO extends AutoKeys implements UserDAO {
    private static LoginAuthenticator loginAuthenticator;

    public GenericUserDAO() {
	loginAuthenticator = (LoginAuthenticator) SystemGlobals
		.getObjectValue(ConfigKeys.LOGIN_AUTHENTICATOR_INSTANCE);

	if (loginAuthenticator == null) {
	    throw new ForumException(
		    "There is no login.authenticator configured. Check your login.authenticator configuration key.");
	}

	loginAuthenticator.setUserModel(this);
    }

    /**
     * @see net.jforum.dao.UserDAO#pendingActivations()
     */
    public List pendingActivations() {
	PreparedStatement p = null;
	ResultSet rs = null;

	List l = new ArrayList();

	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.pendingActivations"));

	    rs = p.executeQuery();

	    while (rs.next()) {
		User user = new User();

		user.setId(rs.getInt("user_id"));
		user.setUsername(rs.getString("username"));
		user.setRegistrationDate(new Date(rs.getTimestamp(
			"user_regdate").getTime()));

		l.add(user);
	    }
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}

	return l;
    }

    /**
     * @see net.jforum.dao.UserDAO#selectById(int)
     */
    public User selectById(int userId) {
	String q = SystemGlobals.getSql("UserModel.selectById");
	PreparedStatement p = null;
	ResultSet rs = null;

	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(q);
	    p.setInt(1, userId);

	    rs = p.executeQuery();
	    User u = new User();

	    if (rs.next()) {
		this.fillUserFromResultSet(u, rs);
		u.setPrivateMessagesCount(rs.getInt("private_messages"));

		rs.close();
		p.close();

		// User groups
		p = JForumExecutionContext.getConnection().prepareStatement(
			SystemGlobals.getSql("UserModel.selectGroups"));
		p.setInt(1, userId);

		rs = p.executeQuery();
		while (rs.next()) {
		    Group g = new Group();
		    g.setName(rs.getString("group_name"));
		    g.setId(rs.getInt("group_id"));

		    u.getGroupsList().add(g);
		}
	    }

	    return u;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    public User selectByName(String username) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.selectByName"));
	    p.setString(1, username);

	    rs = p.executeQuery();
	    User u = null;

	    if (rs.next()) {
		u = new User();
		this.fillUserFromResultSet(u, rs);
	    }

	    return u;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    protected void fillUserFromResultSet(User u, ResultSet rs)
	    throws SQLException {
	u.setAim(rs.getString("user_aim"));
	u.setAvatar(rs.getString("user_avatar"));
	u.setGender(rs.getString("gender"));
	u.setRankId(rs.getInt("rank_id"));
	u.setThemeId(rs.getInt("themes_id"));
	u.setPrivateMessagesEnabled(rs.getInt("user_allow_pm") == 1);
	u.setNotifyOnMessagesEnabled(rs.getInt("user_notify") == 1);
	u.setViewOnlineEnabled(rs.getInt("user_viewonline") == 1);
	u.setPassword(rs.getString("user_password"));
	u.setViewEmailEnabled(rs.getInt("user_viewemail") == 1);
	u.setViewOnlineEnabled(rs.getInt("user_viewonline") == 1);
	u.setAvatarEnabled(rs.getInt("user_allowavatar") == 1);
	u.setBbCodeEnabled(rs.getInt("user_allowbbcode") == 1);
	u.setHtmlEnabled(rs.getInt("user_allowhtml") == 1);
	u.setSmiliesEnabled(rs.getInt("user_allowsmilies") == 1);
	u.setEmail(rs.getString("user_email"));
	u.setFrom(rs.getString("user_from"));
	u.setIcq(rs.getString("user_icq"));
	u.setId(rs.getInt("user_id"));
	u.setInterests(rs.getString("user_interests"));
	u.setBiography(rs.getString("user_biography"));
	u.setLastVisit(rs.getTimestamp("user_lastvisit"));
	u.setOccupation(rs.getString("user_occ"));
	u.setTotalPosts(rs.getInt("user_posts"));
	u.setRegistrationDate(new Date(rs.getTimestamp("user_regdate")
		.getTime()));
	u.setSignature(rs.getString("user_sig"));
	u.setWebSite(rs.getString("user_website"));
	u.setYim(rs.getString("user_yim"));
	u.setUsername(rs.getString("username"));
	u.setAttachSignatureEnabled(rs.getInt("user_attachsig") == 1);
	u.setMsnm(rs.getString("user_msnm"));
	u.setLang(rs.getString("user_lang"));
	u.setActive(rs.getInt("user_active"));
	u.setKarma(new KarmaStatus(u.getId(), rs.getDouble("user_karma")));
	u.setNotifyPrivateMessagesEnabled(rs.getInt("user_notify_pm") == 1);
	u.setDeleted(rs.getInt("deleted"));
	u.setNotifyAlways(rs.getInt("user_notify_always") == 1);
	u.setNotifyText(rs.getInt("user_notify_text") == 1);

	String actkey = rs.getString("user_actkey");
	u.setActivationKey(actkey == null || "".equals(actkey) ? null : actkey);
    }

    /**
     * @see net.jforum.dao.UserDAO#delete(int)
     */
    public void delete(int userId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.deletedStatus"));
	    p.setInt(1, 1);
	    p.setInt(2, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#update(net.jforum.entities.User)
     */
    public void update(User user) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.update"));

	    p.setString(1, user.getAim());
	    p.setString(2, user.getAvatar());
	    p.setString(3, user.getGender());
	    p.setInt(4, user.getThemeId());
	    p.setInt(5, user.isPrivateMessagesEnabled() ? 1 : 0);
	    p.setInt(6, user.isAvatarEnabled() ? 1 : 0);
	    p.setInt(7, user.isBbCodeEnabled() ? 1 : 0);
	    p.setInt(8, user.isHtmlEnabled() ? 1 : 0);
	    p.setInt(9, user.isSmiliesEnabled() ? 1 : 0);
	    p.setString(10, user.getEmail());
	    p.setString(11, user.getFrom());
	    p.setString(12, user.getIcq());
	    p.setString(13, user.getInterests());
	    p.setString(14, user.getOccupation());
	    p.setString(15, user.getSignature());
	    p.setString(16, user.getWebSite());
	    p.setString(17, user.getYim());
	    p.setString(18, user.getMsnm());
	    p.setString(19, user.getPassword());
	    p.setInt(20, user.isViewEmailEnabled() ? 1 : 0);
	    p.setInt(21, user.isViewOnlineEnabled() ? 1 : 0);
	    p.setInt(22, user.isNotifyOnMessagesEnabled() ? 1 : 0);
	    p.setInt(23, user.getAttachSignatureEnabled() ? 1 : 0);
	    p.setString(24, user.getUsername());
	    p.setString(25, user.getLang());
	    p.setInt(26, user.isNotifyPrivateMessagesEnabled() ? 1 : 0);
	    p.setString(27, user.getBiography());

	    if (user.getLastVisit() == null) {
		user.setLastVisit(new Date());
	    }

	    p.setTimestamp(28, new Timestamp(user.getLastVisit().getTime()));
	    p.setInt(29, user.notifyAlways() ? 1 : 0);
	    p.setInt(30, user.notifyText() ? 1 : 0);
	    p.setInt(31, user.getRankId());
	    p.setInt(32, user.getId());

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#addNew(net.jforum.entities.User)
     */
    public int addNew(User user) {
	PreparedStatement p = null;
	try {
	    p = this.getStatementForAutoKeys("UserModel.addNew");

	    this.initNewUser(user, p);

	    this.setAutoGeneratedKeysQuery(SystemGlobals
		    .getSql("UserModel.lastGeneratedUserId"));
	    int id = this.executeAutoKeysQuery(p);

	    this.addToGroup(id, new int[] { SystemGlobals
		    .getIntValue(ConfigKeys.DEFAULT_USER_GROUP) });

	    user.setId(id);
	    return id;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    protected void initNewUser(User user, PreparedStatement p)
	    throws SQLException {
	p.setString(1, user.getUsername());
	p.setString(2, user.getPassword());
	p.setString(3, user.getEmail());
	p.setTimestamp(4, new Timestamp(System.currentTimeMillis()));
	p.setString(5, user.getActivationKey());
    }

    /**
     * @see net.jforum.dao.UserDAO#addNewWithId(net.jforum.entities.User)
     */
    public void addNewWithId(User user) {
	PreparedStatement p = null;
	try {
	    p = this.getStatementForAutoKeys("UserModel.addNewWithId");

	    this.initNewUser(user, p);
	    p.setInt(6, user.getId());

	    p.executeUpdate();

	    this.addToGroup(user.getId(), new int[] { SystemGlobals
		    .getIntValue(ConfigKeys.DEFAULT_USER_GROUP) });
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#decrementPosts(int)
     */
    public void decrementPosts(int userId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.decrementPosts"));
	    p.setInt(1, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#incrementPosts(int)
     */
    public void incrementPosts(int userId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.incrementPosts"));
	    p.setInt(1, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#incrementRanking(int)
     */
    public void setRanking(int userId, int rankingId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.rankingId"));
	    p.setInt(1, rankingId);
	    p.setInt(2, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#setActive(int, boolean)
     */
    public void setActive(int userId, boolean active) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.activeStatus"));
	    p.setInt(1, active ? 1 : 0);
	    p.setInt(2, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#undelete(int)
     */
    public void undelete(int userId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.deletedStatus"));
	    p.setInt(1, 0);
	    p.setInt(2, userId);

	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#selectAll()
     */
    public List selectAll() {
	return selectAll(0, 0);
    }

    /**
     * @see net.jforum.dao.UserDAO#selectAll(int, int)
     */
    public List selectAll(int startFrom, int count) {
	PreparedStatement p = null;
	ResultSet rs = null;

	try {
	    if (count > 0) {
		p = JForumExecutionContext.getConnection().prepareStatement(
			SystemGlobals.getSql("UserModel.selectAllByLimit"));
		p.setInt(1, startFrom);
		p.setInt(2, count);
	    } else {
		p = JForumExecutionContext.getConnection().prepareStatement(
			SystemGlobals.getSql("UserModel.selectAll"));
	    }

	    rs = p.executeQuery();

	    return this.processSelectAll(rs);
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#selectAllWithKarma()
     */
    public List selectAllWithKarma() {
	return this.selectAllWithKarma(0, 0);
    }

    /**
     * @see net.jforum.dao.UserDAO#selectAllWithKarma(int, int)
     */
    public List selectAllWithKarma(int startFrom, int count) {
	return this.loadKarma(this.selectAll(startFrom, count));
    }

    protected List processSelectAll(ResultSet rs) throws SQLException {
	List list = new ArrayList();

	while (rs.next()) {
	    User u = new User();

	    u.setEmail(rs.getString("user_email"));
	    u.setId(rs.getInt("user_id"));
	    u.setTotalPosts(rs.getInt("user_posts"));
	    u.setRegistrationDate(new Date(rs.getTimestamp("user_regdate")
		    .getTime()));
	    u.setUsername(rs.getString("username"));
	    u.setDeleted(rs.getInt("deleted"));
	    KarmaStatus karma = new KarmaStatus();
	    karma.setKarmaPoints(rs.getInt("user_karma"));
	    u.setKarma(karma);
	    u.setFrom(rs.getString("user_from"));
	    u.setWebSite(rs.getString("user_website"));
	    u.setViewEmailEnabled(rs.getInt("user_viewemail") == 1);

	    list.add(u);
	}

	return list;
    }

    /**
     * @see net.jforum.dao.UserDAO#selectAllByGroup(int, int, int)
     */
    public List selectAllByGroup(int groupId, int start, int count) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.selectAllByGroup"));
	    p.setInt(1, groupId);
	    p.setInt(2, start);
	    p.setInt(3, count);

	    rs = p.executeQuery();

	    return this.processSelectAll(rs);
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#getLastUserInfo()
     */
    public User getLastUserInfo() {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    User u = new User();

	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.lastUserRegistered"));
	    rs = p.executeQuery();
	    rs.next();

	    u.setUsername(rs.getString("username"));
	    u.setId(rs.getInt("user_id"));

	    return u;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#getTotalUsers()
     */
    public int getTotalUsers() {
	PreparedStatement preparedStatement = null;
	try {
	    preparedStatement = JForumExecutionContext.getConnection()
		    .prepareStatement(
			    SystemGlobals.getSql("UserModel.totalUsers"));
	    return this.getTotalUsersCommon(preparedStatement);
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(preparedStatement);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#getTotalUsersByGroup(int)
     */
    public int getTotalUsersByGroup(int groupId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.totalUsersByGroup"));
	    p.setInt(1, groupId);

	    return this.getTotalUsersCommon(p);
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    protected int getTotalUsersCommon(PreparedStatement p) throws SQLException {
	ResultSet rs = p.executeQuery();
	rs.next();

	int total = rs.getInt(1);

	rs.close();
	p.close();

	return total;
    }

    /**
     * @see net.jforum.dao.UserDAO#isDeleted(int user_id)
     */
    public boolean isDeleted(int userId) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.isDeleted"));
	    p.setInt(1, userId);

	    int deleted = 0;

	    rs = p.executeQuery();
	    if (rs.next()) {
		deleted = rs.getInt("deleted");
	    }

	    return deleted == 1;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#isUsernameRegistered(java.lang.String)
     */
    public boolean isUsernameRegistered(String username) {
	boolean status = false;

	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.isUsernameRegistered"));
	    p.setString(1, username);

	    rs = p.executeQuery();
	    if (rs.next() && rs.getInt("registered") > 0) {
		status = true;
	    }

	    return status;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#validateLogin(java.lang.String,
     *      java.lang.String)
     */
    public User validateLogin(String username, String password) {
	return loginAuthenticator.validateLogin(username, password, null);
    }

    /**
     * @see net.jforum.dao.UserDAO#addToGroup(int, int[])
     */
    public void addToGroup(int userId, int[] groupId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.addToGroup"));
	    p.setInt(1, userId);

	    for (int i = 0; i < groupId.length; i++) {
		p.setInt(2, groupId[i]);
		p.executeUpdate();
	    }
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}

    }

    /**
     * @see net.jforum.dao.UserDAO#removeFromGroup(int, int[])
     */
    public void removeFromGroup(int userId, int[] groupId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.removeFromGroup"));
	    p.setInt(1, userId);

	    for (int i = 0; i < groupId.length; i++) {
		p.setInt(2, groupId[i]);
		p.executeUpdate();
	    }
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#saveNewPassword(java.lang.String,
     *      java.lang.String)
     */
    public void saveNewPassword(String password, String email) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.saveNewPassword"));
	    p.setString(1, password);
	    p.setString(2, email);
	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#validateLostPasswordHash(java.lang.String,
     *      java.lang.String)
     */
    public boolean validateLostPasswordHash(String email, String hash) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.validateLostPasswordHash"));
	    p.setString(1, hash);
	    p.setString(2, email);

	    boolean status = false;

	    rs = p.executeQuery();
	    if (rs.next() && rs.getInt("valid") > 0) {
		status = true;

		this.writeLostPasswordHash(email, "");
	    }

	    return status;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#writeLostPasswordHash(java.lang.String,
     *      java.lang.String)
     */
    public void writeLostPasswordHash(String email, String hash) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.writeLostPasswordHash"));
	    p.setString(1, hash);
	    p.setString(2, email);
	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#getUsernameByEmail(java.lang.String)
     */
    public String getUsernameByEmail(String email) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.getUsernameByEmail"));
	    p.setString(1, email);

	    String username = "";

	    rs = p.executeQuery();
	    if (rs.next()) {
		username = rs.getString("username");
	    }

	    return username;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#findByName(java.lang.String, boolean)
     */
    public List findByName(String input, boolean exactMatch) {
	List namesList = new ArrayList();

	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.findByName"));
	    p.setString(1, exactMatch ? input : "%" + input + "%");

	    rs = p.executeQuery();
	    while (rs.next()) {
		User u = new User();

		u.setId(rs.getInt("user_id"));
		u.setUsername(rs.getString("username"));
		u.setEmail(rs.getString("user_email"));
		u.setDeleted(rs.getInt("deleted"));

		namesList.add(u);
	    }
	    return namesList;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#validateActivationKeyHash(int,
     *      java.lang.String)
     */
    public boolean validateActivationKeyHash(int userId, String hash) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext
		    .getConnection()
		    .prepareStatement(
			    SystemGlobals
				    .getSql("UserModel.validateActivationKeyHash"));
	    p.setString(1, hash);
	    p.setInt(2, userId);

	    boolean status = false;

	    rs = p.executeQuery();
	    if (rs.next() && rs.getInt("valid") == 1) {
		status = true;
	    }

	    return status;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#writeUserActive(int)
     */
    public void writeUserActive(int userId) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.writeUserActive"));
	    p.setInt(1, userId);
	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#updateUsername(int, String)
     */
    public void updateUsername(int userId, String username) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.updateUsername"));
	    p.setString(1, username);
	    p.setInt(2, userId);
	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#hasUsernameChanged(int, java.lang.String)
     */
    public boolean hasUsernameChanged(int userId, String usernameToCheck) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.getUsername"));
	    p.setString(1, usernameToCheck);
	    p.setInt(2, userId);

	    String dbUsername = null;

	    rs = p.executeQuery();
	    if (rs.next()) {
		dbUsername = rs.getString("username");
	    }

	    boolean status = false;

	    if (!usernameToCheck.equals(dbUsername)) {
		status = true;
	    }

	    return status;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * Load KarmaStatus from a list of users.
     * 
     * @param users
     *            List
     * @return List
     * @throws SQLException
     */
    protected List loadKarma(List users) {
	List result = new ArrayList(users.size());

	for (Iterator iter = users.iterator(); iter.hasNext();) {
	    User user = (User) iter.next();

	    // Load Karma
	    DataAccessDriver.getInstance().newKarmaDAO()
		    .getUserTotalKarma(user);
	    result.add(user);
	}

	return result;
    }

    /**
     * @see net.jforum.dao.UserDAO#saveUserAuthHash(int, java.lang.String)
     */
    public void saveUserAuthHash(int userId, String hash) {
	PreparedStatement p = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.saveUserAuthHash"));
	    p.setString(1, hash);
	    p.setInt(2, userId);
	    p.executeUpdate();
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#getUserAuthHash(int)
     */
    public String getUserAuthHash(int userId) {
	PreparedStatement p = null;
	ResultSet rs = null;
	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.getUserAuthHash"));
	    p.setInt(1, userId);

	    rs = p.executeQuery();

	    String hash = null;
	    if (rs.next()) {
		hash = rs.getString(1);
	    }

	    return hash;
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}
    }

    /**
     * @see net.jforum.dao.UserDAO#findByEmail(java.lang.String)
     */
    public User findByEmail(String email) {
	PreparedStatement p = null;
	ResultSet rs = null;

	User u = null;

	try {
	    p = JForumExecutionContext.getConnection().prepareStatement(
		    SystemGlobals.getSql("UserModel.findByEmail"));
	    p.setString(1, email);
	    rs = p.executeQuery();

	    if (rs.next()) {
		u = new User();
		fillUserFromResultSet(u, rs);
	    }
	} catch (SQLException e) {
	    throw new DatabaseException(e);
	} finally {
	    DbUtils.close(rs, p);
	}

	return u;
    }
}
